port forward issue

RouterOS Beginner Basics
1

I’m trying to port forward some ports , some ports is opend but others not forwarded
I’ve multiple DVRs in different locations , and have my internet connection at the first location (there’s RB950) , also there’re 2 DVRs connected to the routerboard through 3COM switch 10/100/1000, other DVRs located in different locations , so I connected these locations by outdoor antennas (PTP), when I try to open some ports of my web server (which is in my case my DVRs) , it’s opend then I can access my DVRs (from internet) with opend ports, but some other ports not opend ,when I try to check those ports using canyouseeme.org or some others tools it says not opend ,so I cant access their DVRs.

ip–firewall—NAT–GENERAL add chain:dstnat protocol :tcp dst.port:87 in.interface:WAN ACTION ToAddress 192.168.0.5 To port:87
then Apply and OK


Idon’t know why some ports opend while others not , is there a limit to the ports that can I forward in mikrotik??
hope help me out to solve this problem

Thanks in advance
waiting your reply

2

You can forward as many ports as you want. If some work and some don’t, there must be some difference, how target devices are connected, configured or something. Try to find them, or provide more details. Is it just one big LAN, or is there some routing, VPNs, etc..?